Rotary cutting head



July3,192s. y Y 1,675,765

' W. OCONNOR y ROTARYUUTTING HEAD Fired Aprii 21, 1925 Patented July 3,`l9l28`.

eNews-rims PATENT/nena.

WILLIAM II. ocoNNoa, or EAsT onANGE; `NEW .IEBsEZgAssIeNoE To :oma E, oon-nov, sa, or EAST ORANGE, NEW JERSEY. l l

ROTARY CIITTING HEAD.

.Appncauqanlea `April a1, 192,5., serial irq. cessa.

This invention -relatesto rotary cutting heads. l An object of my invention is toprovidela ing raw materials. l Another objectof my invention `is the production of a rotary cutting head.particularlyapplicable for slabs, `such as zenitherm,

dulls the cutting edges ofa bit.

Another object of this" invention is the production o a cutting headwhich, `owing to the particular arrangement of the bits,

which is of `an `abrasive nature and quickly will permit of making a deeper cut than can be made by any ofthe cutting heads now in general use. Y 1; I

\ Another object of this invention is `the production of a rotary cutting headhaving a series of cuttin .blades so arranged that only a portion of t e blades will come in ccn`-` tact with the material under `treatment `at one andthe same time. ySince thef blades penetrate the `materi under treatment tol a greater depth than would `be the case `Where the bit extends the entire length 0f the` cutting head. ,1 f Another object of this invention is the production ofi a rotary cutting head having a reduced cutting surface,\thereductionqbeing of such a nature as to sub-divide the` cutting surface and thus permit of adeeper cut, so that with less cutting 4surface a larger percentage of the material.undertreatment can be removed with less bit action.`

A further object of this invention` is the production of a cutting head having a series of bits so arranged as to prevent the material under treatment from sliding toleither ing a` series of bits arranged thereon in opf` positely disposed spirals. The spaced relation of the bits to `each other is such that the material under treatment Will not be exosed tothe hammer or knock such as would Ee imparted to it under the treatment ofqa bit equal to the length of the cuttingfhead.

A still further/object, of my invention is the reduction of a rotary cutting head `Whic will produce high eiiciency in operarotary cutting head for surfacing orleveltion `and yet `"marked simplicity asa `Whole and 1n `respect to `eachn of `its component parts, ,so` thatyitswmanufacture is economically `failitated bothas regards to parts and its assembly. 1

' With these and other objects.` in view, which -may be incident to `my improvements, they invention consists in `the parts and` coin` binations to` be` hereinafter set `forth and claimed, with the understanding thatfthe ,several` necessary elements comprisingmy in vention, may be varied in construction, proportions. and arrangement, `Without depart- Ing. `from the spirit and scope `of the appended claims,` 1 4 Inorder to make my invention more clearly understood, I have shown in the accompanyingdravvings means for carrying. the same into `practical effect, without limiting the improvements in their useful applications to the particular constructions, which for fthe `purpose .of explanation, have been made `the su jectlof illustration. f Inl thedrawings forminga part of this specification:` v n y Figure 1 isa side elevation of `a caterpillar table `with my. improved rotary outting `head in position;

Big. Elisa sideelevation of a rotarygcuttin `1ead with bits in position;4 `lfgigmgis` ,a crosssectional view taken on line 3f-310i Fig. 2; i l

Fig. Lisi a diagrammatical` illustration showing `the passion` of the. bis; and

Fig. 5 isa perspective` view of one .of the its.. y Referring by numeralsto the drawings, l represents the baseof a table having mnint-` ed `thereupon adjustable uprights '2su porting a top 3,l 3, `The top 3 supports a guiewa'y 4, upon which travels a caterpillar feed 5, The caterpillar is mounted lupon suitable spiockets Gland 7 journaled. on` brackets 8 an 9. 1 Mountedin a suitable upright 10, immediately above the caterpillar, is arotatable cutting head 11. Mounted upon the cutting headll in slots. 12 are thebits 13, over which are `fitted plateslt held in p set screws 15. V"The `bits l. are `a "ustable within the slots 12, andare arrange inthe form of", oppositely disposed spirals. In

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